Blast-furnace apparatus.



No. 884,665. A .PATENTBD APR. 14,1908.

I W. KENNEDY. BLAST FURNACE APPARATUS.

APPLICATION FILED MAY 24, 1907.

2 SHEETS-SHEET 1.

FIG- 1 PATENTED APR. 14, 1908. w. KENNEDY.. BLAST FURNACE APPARATUS.

2 SHEEIS-SHEET 2.

APPLICATION FILED MAY 24. 1907.

Fig.2.

AHF MV w MI AFH m A 5 7 i m'vsN'roR WALL K mqi l3erq mw I wn'nzssss tional elevation of the upper portion of a I To all whom it may concern:

WALTER KENNEDY, OF BELLEVUE, PENNSYLVANIA.

BLAST-FURNACE APPARATUS.

Specification 01 Letters Patent.

Patented April. 14, 1908.

Application filed May-21, 1907.. Serial No. 376,546.

Be it known that I, WALTER KENN DY,

residing at Bellevue, in the county of Allegheny and, State of Pennsylvania, a citizen of the United States, have invented or discovered certain new and useful Improve-- ments in Blast-Furnace Apparatus, of which thefollowing is a specification.

The invention described herein relates to certain improvements in charge distributing apparatus for blast furnaces, and has for its 'ect a construction whereby the charge mag be uniformly'distributed in the furnace an the seal of the furnace may be maintained while the main bell is open for dropping the charge.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings forming a part of this specification, Figure 1 is a secblast furnace having my improved charging apparatus'arranged thereon; Fig. 2 is a sec tlonal plan view indicated by the line IIII Fig. *1; Fig. 3 is a view-partly in section and partly. in elevation, illustrating a modification of the charging apparatus shown in In the practice of my invention, the main hopper 1 is secured to the furnace in the usual or any suitable manner, and is pro fly ided at or near its upper end withan infitardly projecting ledge 2 designed to form i being provided with a horizontal the a per.

a seat for an aux ary distributing hopper 3. As shown in Figs. 1 and 3, this, ledge 2 is preferably provided with a rounded seat for the reception of the correspondingly shaped. rib 4011 the auxiliary distributing hopper, so that :the latter may move easily around on its seat. The main distributing hopper 5 is located above the auxiliary hopper and preferably supported on the main be per, it ange 6 adaptedto rest upona seat 7 formed on the upper end of or supported by the main hop- In order to facilitate the rotation of the distributing hoppers as hereinafter de- 'scribed,.anti-fr1ction rollers 8 are arranged between the flange 6 and the seat 7. As

shown the lower end of the main distributin hoppgifirojects down into the upper end 0 are interlocked, preferably by means of suit- 'tatin distributing hopper so that one is practioa y a continuation of the other;

I ably spaced lugs or teeth 11 and 12. on the two hoppers. In order to rotate these hoppers. a ring 13 is' supported by the seat 7 on the main hop er and provided around its 1 1 teeth. for'engagement with periphery wit the rack 14. adapted to be reclprocated by the fluid-pressure cylinder 15. 'Pawls 16 are mounted on the ring 13 and e age teeth on the eriphery of the flange 6 o the distributing opper. the. ring 13 is given a reciprocating movement which is changed into a step by step, onward movement of the distributing heppers. In this construction, as will be read understood by those skilled in the art, the Weight of only a small portion of'the charge will rest upon the auxiliary distribut' bell, so that the latter will not present muc resistance to the rotation of the main dis tributing hopper. The principal load will In this construction be borne by the main distributlng be per as in the construction heretofore use The main or principal use of the auxiliary hopper is to maintain a gas seal at all times when the distributing hopper is being rotated.

In the construction shown in Fig. 3, provision is made for exerting an upward pressure on the main distributing hopper when the latter is being rotated, thus reducing the frictional resistance to its movement. The toothed rin is mounted as heretofore stated on seat 7 0 the. main bell and is adapted to be reci rocated by thefluid pressure cylinder. n the upper face of this toothed ring are formed a series of teeth with which pa'wls 17 pivotally mounted on the distributing hopper will engage; The arran emeht 0 these awls is such that when t e ring is rotate an upward or lifting force willbe exerted on t e distributing hopper, faciliits rotation.

I c aiinherein as my invention.

-1. A blast furnace charging apparatus having in combination a main hop er and bell, main and auxiliary distributing hoppers in driving engagement with each other, the

auxiliary hopper havinga as-tight seat on the main-hopper, means Ior rotating the main distributing hopper, and means fo closing tlkig auxiliary hopper.-

having in combination, a main ho per and bell, main distributing and auxi any distributing1 hoppers in 'drivin enga ement with eac other, the auxiliaryliqpper aving ast furnace charging apparatus a gas-tight seat on the main hopper, meanfs for closing the auxiliary hopper, means for' reducing the friction between the main per and the auxilia hopper, and means for rotating the main distributing hopper.

A blast furnace charging apparatus havmg in combination a main hopper and bell, a

dist hop ribnting hopper seated per, a ring concentric with the axis of the hoppers, means for shifting said ring-around 10 its axis, ppwls interposed between the ring and may be shifted by t clos dist uting hop er whereby said hopper e ring, and means for said hopper.

blast furnace charging apparatns on the main with said ring,

having in combination a main hopper, a dis- 5 tributmg hopper seated on the maln hop er, a toothed ring concentric With the axis 0 the hoppers, pawls depending at an angle fromthe distributing opper into; engagement means for reciprocating'said 20 rin and means for closing the hoppers.

n testimony whereof, I have hereunto set my hand;

WALTER KENNEDY. I Witnesses:

CHARLES BARNETT, J. HERBERT BRADLEY. 

